TM 5-4240-501-14P GENERAL INFORMATION Overhaul Procedure SECTION PAGE NO REPAIRS Clean parts 11 1 & 2 Resize cylinder bore to next oversize 6 3 & 4 Replace valve guide- intake or exhaust 6 2 Reface valves and seats and lap 6 4 to 6 Replace valve seat insert 11 3 to 5 Replace main bearings 11 6 Replace oil seal 2 4 Install breaker point plunger, bushing and plunger in cylinder (Internal breaker) 2 9 & 10 Install breaker point plunger bushing and plunger in cylinder (External breaker) 2 6 & 8 Replace armature and governor blade 2 12 & 13 Replace coil or armature or both 10 3 Replace automatic spark advance, weight and spring 3 17 & 18 Replace throttle shaft bushing 3 3 to 26 Repair carburetor 7 1, 2, Replace rewind starter spring 5 to 7 and rope 7 3 Starter clutch 11 3 Remove ball bearing and re-assemble to crankshaft SECTION PAGE NO REASSEMBLE 10 3 & 4 Tappets, cam gear, camshaft 5 Crankshaft and bearing support 5 Crankshaft, bearing plate- adjust crankshaft end play 9 3 & 4 Piston, piston pin, connect- ing rod, rings 8 4 Oil Slinger 5 1 to 7 Mechanical governor 10 4 Sump or crankcase cover- adjust crankshaft end play 6 3 Adjust valve tappet clearance 6 2 & 3 Valves, springs, retainer SECTION PAGE NO REASSEMBLE (Cont) 2 6 & 8 Coil, armature, governor blade 2 5 Breaker points 1 (Internal system) 2 5 Condenser (Internal system) 2 13 Breaker shaft-Magna-Matic 2 13 Primary wire-Magna-Matic 2 8, 9 Adjust Armature timing & 12 2 7 & 14 Condenser 2 7 & 14 Adjust and clean breaker points (External) 2 6 & 8 Breaker point cover 2 12 Coil and armature assembly 2 11 & 2 Adjust rotor timing 2 7 & 14 Breaker box cover 2 3 Flywheel and starter pulley or clutch 7 8 to 40 Electric starter (110 V)(12 V) 2 6, 8&9 Adjust air gap-armature to flywheel 2 1 Check spark 8 3 & 4 Breather or valve cover 6 1 Cylinder head and shield 2 1 Spark plug Muffler Intake elbow or carburetor and tank 4 1 to 12 Carburetor and linkage and governor controls 5 1 Check air vane governor 5 2 to 7 Check and adjust mechanical governor Blower housing Fuel filter Darts, tank & line Air cleaner elbow or pipe 8 1 Fill crankcase with oil Start engine (fill with gas) 2 1 Check spark 6 1 Retighten cylinder head screws 3 7 to 27, Adjust carburetor 5 2, 3 & 6 Set governor to obtain correct engine speed (Remote controls) 3 1 Clean, fill, assembly air cleaner Spray engine and apply decals 5